Well, for example, my hair is low-porosity. This means it does not readily accept conditioner. It means products often just sit on top of the hair and never absorb (e.g. Oil). so, i utilize heat to open the cuticles and get the moisture in. Most advice is to avoid heat - I now know that is advice I am better off ignoring.
As far as protein - my hair will sometimes respond well initially o products with protein. After a week or two at the most, it will suddenly be dry and straw-like. I also cannot go completely protein-free, so I now know to watch my hair and adjust the protein and moisture accordingly. (I'm still learning this part.)
I have been no-poo for over a year and only in the last month or so has it finally started coming together for me and it was only after I learned my hair properties. It completely dictates what products work best for me. My hair may not do everything low-porosity hair can be known for, or respond exactly how another's low-po hair might, so it still isn't a precise formula. but it sure narrows down the field of products and techniques to try!
remember, with all advice or suggestions for your hair, YMMV!!
2b wavy, medium texture, low porosity, med-high density. Protein finicky.
Cleansing: DCNP, every 4-5 days (occasionally use CJ cleansers).
RO: CJSC, occasionally use JCDC
LI: KCKT or CJSL
Gel: KCCC, CJCIAB for 2nd day hair (sometimes third)
Heat is my friend: warm water rinses, steam caps, and diffuse dry. I love CLU cloths and my Denman.